Keyword: «underwater passage»

This article discusses the seasonal fluctuation of the pipe of the underwater passage of the main gas pipeline on the section of the Khatasskaya channel of the Lena River, during the re-formation of the main channel.Special attention is paid to the section of the coastal slope where seasonal exogenous processes occur in the form of frost heaving and thawing of the soil, which directly affect the stress-strain state of the main gas pipeline. The choice of the left bank is directly related to the fact that the layer of seasonal freezing, starting from the near-rim plot, interlocks with the zone of permafrost soils. To determine the seasonal fluctuations of the two lines of the main gas pipeline, the method of surveying the planned-high-altitude position of the pipeline was used. It is noted, that oscillations can reach up to two meters vertically, seasonally moving horizontally to the channel of the Khatasskaya channel.